Office



(No Model.)

0. E. SORIBNEE.

TELEPHONE SWITCH. No. 284,908. Patented Sept. 11, 1883.

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WW MM QZJ a. Pain; Plvalolinngmphun c NITED STATES PATENT OFFICE.

CHARLES E. SCRIBNER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE WESTERNELECTRIC COMPANY, OF SAME PLACE.

TELEPHONE-SWITC H.

SPECIFICATION forming part of Letters Patent No. 284,908, datedSeptember 11, 1883,

Application filed June 5, 1883. (No model.)

To aZZ whom, it may concern Be it known that I, CHARLES E. SORIBNER, acitizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented a certain new and usefulImprovement in Telephone- Switches, of which the following is a full,clear, concise, and exact description, reference being had'to theaccompanying drawings, forming a part of this specifiation.

My invention'relates to that class of automatic switches which are usedupon telephone call-boxes. A switch of this class is shown. in my PatentNo. 248,671, of October 25, 1881.

My invention herein is designed to do the same work, and has been foundsuccessful in practice.

My invention is illustrated in the accompanying drawings, in whichFigurelis a top view of my telephone-switch.- Fig. 2 is a frontelevation thereof, and Fig. 3 is a sectional view upon line 00 m of Fig.2.

Like parts are indicated by similar letters of reference throughout theseveral views.

The frame or plate a is designed to be secured to the side of the box.The fixed pin or hook I) is insulated from the frame and serves as oneof the contact-points. The 1ever 0 is pivoted preferably at d, as shown.The spring 6 ten ds to hold the lever in the position shown, so thatwhen the telephone is not hung upon the hook the lever and hook will bedisconnected and the other contactpoints closed.

The ring f of the telephoneflshown in dotted lines) is preferably ofmetal, and when forced upon the tapering hook moves the lever againstthe force of the spring. The hook and lever are thus brought intoelectrical.

connection. I provide, preferably, a metallic spring, as shown, betweenthe lever and fixed pin, in order to make the contact be tween the twopieces more secure when brought together by forcing the ring of thetelephone about them.

Any well-known system of circuits may be used with my switch. The linein from the central office may be connected permanently with theswitch-lever, as shown. may be included in branch at and the telehone inbranch 0 in one of the well-known common and well known, I will notdescribe them more in detail.

I claim- 1. The combination, in a telephone-switch,

of a movable lever and fixed pin, with a ring attached to the telephone,whereby the level and fixed pin are connected together when thetelephone-ring is forced about them, substantially as and for thepurpose set forth.

2. The combination of the movable lever,

the insulated pin, and metallic ring attached to the telephone, saidring being adapted to be forced over the hook and projecting portion ofthe lever, with circuits and connections, substantially as and for thepurpose set forth.

3. The combination, in a telephone-switch, of a fixed pin which servesas one of the contact-points, with a movable lever, a metallic spring orconnecting-piece between .the said pin and movable lever, and a ringattached to the telephone, said ring beingadapt'ed to move the lever. soas to close the circuit between said pin and lever when the telephone ishung upon said pin, while contact at one or more other points is brokenby the said movement of the lever, substantially as and for the purposespecified.

In witness whereof I hereunto subscribe my name this 22d day of May, A.D. 1883.-

. CHARLES E. SCRIBNER.

Witnesses:

. PAUL A. STALEY,

GEORGE P. BARTON.

The bell

